{
  "manageEntity": {
    "action": "Save",
    "entityId": "1471934400",
    "entityType": "Track",
    "nonce": "0xeb09fa96de5df4c2f1b230c2317309332472d0b16ec092f67decd6e418300d05",
    "signature": "0xbe62c4b9e9fd735f422c5c4df3e8932580da906e62721b6c2b2691384fb8b87c755d256e33af0a5e806e4767501a8ef294129a8aebce03feb7794b3f0d83af0e1b",
    "signer": "0x1642AB480EAD0cea9776277347Cbd3e5Fe9889f6",
    "userId": "711757920"
  }
}