{
  "manageEntity": {
    "action": "Save",
    "entityId": "1271587688",
    "entityType": "Track",
    "nonce": "0xb89d70fb498fd9875a1907125fba78f2a086948c05a7565ee9c314b2b6b86633",
    "signature": "0x928161a909ab9edcabe9243a564a1ca0d22bb3b51979f9004f65a0ec160237b21bfca52160eb7ad078f688ba5484067126bc355ff48a371982e80e3b54d2e7bd1b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}