{
  "manageEntity": {
    "action": "Save",
    "entityId": "984192",
    "entityType": "Track",
    "nonce": "0xf2413563d0bab58e74ffd7347fb6c92778fafe92a60cc18c2d7ab38059b3c7b8",
    "signature": "0x7136c1c4e4ceaec4026d27fb89ec0229a182bb5e3312c811ba97c5dac8250f584e1e1af56beab4deeb97e84dedfc0b0f8af9ac1667575cfefbcabb2097c626a21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}