{
  "manageEntity": {
    "action": "Update",
    "entityId": "488680673",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb1fb4b009db4436d407b757459fff052caf74a1ec9f9b82e7343582e55177663",
    "signature": "0x31bb199acb1259f2346303c0e2c4d694f221de06995fe18158876ef08b2fd2020574b2346549b7e2129fe851191e396f0452a90fcf5015c78d1e852c0ec7cfe71c",
    "signer": "0x8497fB9DF4685a1Ea0D6057dE3AF05FC8d768252",
    "userId": "488680673"
  }
}