{
  "manageEntity": {
    "action": "Save",
    "entityId": "715063",
    "entityType": "Track",
    "nonce": "0x2802fb32d076b68447d6645d66b9214b72cb9a26523c4988627de0e643dbbfec",
    "signature": "0xf1910d5bdcd5cdce5113436716c8b18e87f63ddfa5f55dc39e0f0115407a13a0200251bf4d5c430c25c52a7cd4d816c390c5c5692ad7f3ca876167f36837ef131b",
    "signer": "0x2B28feb1CA15953a5a910C4E741698a24e8b3FE9",
    "userId": "887020893"
  }
}