{
  "manageEntity": {
    "action": "Update",
    "entityId": "493430861",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajtjoktij46k3nkuwp7q7teekdctci4cvskuoi2vsgxipbnqe5nla\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2141576060}]}}}",
    "nonce": "0x40b2dccf3fe1f25311e2686d3b8e0e7d667465096a9b9686525256ebe2ebec41",
    "signature": "0x35fa99e3706f72005c49d523264c1569ff3df25e5b46cbdbf2b0fc17d8f72afa1d8be7ba8e8f5866a9deb642535a1877750bad5885c12253231578fca8010cf51c",
    "signer": "0x96c31Ac93Df1287E8C1F0A0D7BbdeDA4161651F6",
    "userId": "493430861"
  }
}