{
  "manageEntity": {
    "action": "Save",
    "entityId": "806883090",
    "entityType": "Track",
    "nonce": "0x95b49a0fec01e9d0797bebfd4089f33034f4f2268e29b9d5bf2a9c73957ddad3",
    "signature": "0x7875b256944ebbf872da5f0956f32be1890bcbbb877af0ff3a6fdc0b639fa5270aaed97d27f4138fa032e0b45f14dc4eba66b0b7c370c3d0b69214d558a341d91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}