{
  "manageEntity": {
    "action": "Save",
    "entityId": "1486052967",
    "entityType": "Track",
    "nonce": "0xd1c50db77a7ca031c1afdd705aca1ea0b5aac5e6ba2323b57b14d1cb8f7f9f98",
    "signature": "0x1f14de382d64925f13ea87888f52e2f813805c094007018b589542d9ddee9e5145ad471ee429a81b11ed89cd3b4b9bb4fef16fb8160ffcaf0acef46fdc32a60a1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}