{
  "manageEntity": {
    "action": "Update",
    "entityId": "354430347",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf4bbf2bbb613885a3bd7835e210001ab748b83ccfd7e981ec421c668ead728a0",
    "signature": "0xa84ab95dae49a4f0108a0ef41b8db132443da4bcde6ec757f4c3c1247f8e7e946c4d56d7f7b08cc4a692f9fd1525842c9a2feda125114cdb4da3a40f9f33e9101b",
    "signer": "0x52967526D0c703Df20080EBeA5e960D503c083d6",
    "userId": "354430347"
  }
}