{
  "manageEntity": {
    "action": "Update",
    "entityId": "158522887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdf01c298f478c54e9a929c797dedd045c88df37da8ba0f86b02ac85bec645c7f",
    "signature": "0x77988bb2086e4651f6ba1369eea1136ee0a5eead22f39f94937f46276e8687f97aef691f08d236ee55be191e533b47ee50d4ab9dbfc8b339e4e5cb72f972d8a61b",
    "signer": "0xa0e74dFCE6fB03B08b3E1CbD8FcF35E9aA42fA19",
    "userId": "158522887"
  }
}