{
  "manageEntity": {
    "action": "Save",
    "entityId": "225365348",
    "entityType": "Track",
    "nonce": "0xd9ecc9a752f43316510a2a1a47c86bd3710d2742c136a616e5d61123fbdc1798",
    "signature": "0x583d85a9f3d3efe4aa08220bec32bb6830881d7d0196b7521f1bcf3cde2035726b073f7488c007c39ed05cbeafe24a137074d6c64d933a872c12483f659860ea1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}