{
  "manageEntity": {
    "action": "Update",
    "entityId": "308558165",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahywsqurbzyb2gmcirtmdsisqqnfkmobjra6sxpxmqvs3ynrwobka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2000619365},{\"type\":\"playlist\",\"playlist_id\":1877951072}]}}}",
    "nonce": "0x87039b0fe0b87ba5e02ccf829f04faddfc319eb9ee855d8615b257c919741ea5",
    "signature": "0x7c1b8a0437c32b7077022a651341712de43cb7f20e0bc94ceb3ecbabb8b0087d17906e91c05e8d4e03745609973e0bc0ce96a3bf642f24c3e183c422556163f01b",
    "signer": "0xa85dce385eaA369F6073e0b6e242561d0870425C",
    "userId": "308558165"
  }
}