{
  "manageEntity": {
    "action": "Save",
    "entityId": "482766102",
    "entityType": "Track",
    "nonce": "0x9f8eda0d02d330f522e57ea9ffa667965bef1c05c99a1a4cc10f12907d1f1d2e",
    "signature": "0x67d0afa5f3c5aa8c5fa4cdbf2f3e116d29d3ad2cd9dbfad1419d3fe7da960f2c5e03d6905ffb7c7167ff1e91aca35bed5b19db99490520c6088f3d96be31789b1b",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}