{
  "manageEntity": {
    "action": "Update",
    "entityId": "599834673",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6a0c08c254697d6e5312e3b3985a9f622f4a888c98e96df406e96115b17e5a88",
    "signature": "0xdf851f37791d895682f24c7fe5de6f8e74c39d13d49682627466a69d2a90967745290e28dd4c66b4d9cb5dc159efa9c6d7b0873c4bb593bd8f0b9d1868fbce441c",
    "signer": "0xc5feD1872BC05Ec03aF299E6A4B8B81D9d531925",
    "userId": "599834673"
  }
}