{
  "manageEntity": {
    "action": "Save",
    "entityId": "9261545",
    "entityType": "Track",
    "nonce": "0xf400c5fa278539605e3628d6ec077b462c11d93d438a27845712b2ad18f6d3cb",
    "signature": "0x17e8162f3e045fefe9a3a601a2c2a3cec009fa2ccec6bea33211eb66c0bec21b15f40b3d6992761d559fe5f2f74a32e3499f5ae8cf8fb685a1e54c0ec03ad91c1b",
    "signer": "0x76433fcfc10E04743aB4EB98660d4B47526AD243",
    "userId": "328228955"
  }
}