{
  "manageEntity": {
    "action": "Update",
    "entityId": "777704871",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera62mft4xyigl4owc33cyclu4xudaeempggrii5kahoof5zoqk63ba\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":269346467}]}}}",
    "nonce": "0x44c23bbdf0d6920ad43ca0180f28e1af5c476e3695e8b2d782e6562e095cd2c3",
    "signature": "0x32e806414eb1499eb89efa5778d383c6400d960545d884a24347724d0d985b936b823b3411c4dd2a4bc925a20cc1410e25da2d1a2eb85b212e15f9679c0232a51c",
    "signer": "0xAB2c106A808170ffcCbeF493492c309f20a5D3eC",
    "userId": "777704871"
  }
}