{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111462007",
    "entityType": "Track",
    "nonce": "0x64773cc81919e100e11b833388958faaeeae282be7bc98b04068c3c90de0d866",
    "signature": "0x947310e92be173d0266b1ef1d2410e554dc5db8bb5d79554508e80f0c22ba3c66c645c3947773498eccf8e861b379ef475f24ce0384216d82115977048d8620f1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}