{
  "manageEntity": {
    "action": "Save",
    "entityId": "1353530931",
    "entityType": "Track",
    "nonce": "0x59eb5d67b52c37c5889da0170a32ae418a64a437c4664c91a51d78a0f4b086a0",
    "signature": "0x7eaae6de997e1b554d73e821e5262037ee4e9948b935defbab33234a402bdb9a54c004d0252fbb540aa35dbf211251fcb04ef5a3388107d7f36dc44c25d2359f1b",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}