{
  "manageEntity": {
    "action": "Save",
    "entityId": "1626616035",
    "entityType": "Track",
    "nonce": "0x70b77f590ec49a52d09501a8ef17002004c806a0673de497260f4ecbfdea1aaf",
    "signature": "0x8b8a80b8eed239d05409d155fc27ef1ba0358770ab0fb816f3aa1d8e2b41ebd332871d10c7da62f3d8bcb76ec13bfe2a0677a2ad691de3ca5609664b3602ecc61c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}