{
  "manageEntity": {
    "action": "Update",
    "entityId": "213476781",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x51c735c45c651ea09367e14ac5cb5a11b5855743790a07d7985694cd48866da4",
    "signature": "0x285cd04f7d8867fe4b56ab4345d1c193952630f41497d7aabd632fc9b9c7d2443dccb8e40d54eb2a1cb96d0fd0b4746f0c109b1ebf3feb15847a7511ae932cc31b",
    "signer": "0x8Bb8fa95906668B2302B27e50860464EDe04Eb74",
    "userId": "213476781"
  }
}