{
  "manageEntity": {
    "action": "Save",
    "entityId": "1229299026",
    "entityType": "Track",
    "nonce": "0x36eec6d1c976ad9a425aa1f3a137cdb436645384a99198df27e046045f02da38",
    "signature": "0x73cdb00d52279929e5add263969e18379615e629c2ed696f8f29ea20e97c8d740a9fa3f85ec2ba75bea572dc1bfa25bb72659cb88e1facc2873084ef9f4881561c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}