{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052265534",
    "entityType": "Track",
    "nonce": "0x05bfe5b3fc25ecf5f98db4bf1aa2f4259e48d877b31f4db0dc1acd49fddfe8ad",
    "signature": "0x96f33246c89c1e2b19ed67f4b6edcd8bc963e54a7a4910d5b1eb8cad518a29bf414af722bfea15304870f36f3703d057773459b1d647ae009f0c7f159c1888fd1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}