{
  "manageEntity": {
    "action": "Update",
    "entityId": "749972993",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1299af83c217a57b3a42a2c2350e6be3e18978dbe859c7b14c8203aa1ba55bf6",
    "signature": "0xb6277a7515fff62a91d15852fbced5464c8de83b0ed9d4407567d92eda2ab3395b6ddadce59d88e48db60e3bd460f2daa08bb74048337428d9a439d821cd61df1c",
    "signer": "0xAb91557b191Fc727F6AFcEA165FEaF0bc6fE345F",
    "userId": "749972993"
  }
}