{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080270874",
    "entityType": "Track",
    "nonce": "0xb31a07a9fc4666c4a8b59c772656283d9729de4a0e936669e3cba0664073d0c2",
    "signature": "0xe5a6d277c3cb8c15ad8cded7dc754d4126b6ded4b9bee308cb3ad376f3f7aa581f4b0aba4174645bd71f9fa329b1bd3aac37776c0b8f4572d58f55d31916256f1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}