{
  "manageEntity": {
    "action": "Save",
    "entityId": "1717685313",
    "entityType": "Track",
    "nonce": "0x0fa5c7287848dfe9ea7b39db23a177f94970586b45cc2d9d6289f45014bf7279",
    "signature": "0x60d17b83aeb655f36f4e0ab139cd795d835f2dc91aef02aafc1ccbcfcd6ff25e03f21b5458e394eaf4187556a4f3fa5c1321db3ac19b7ddc8e8896d86170a2cc1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}