{
  "manageEntity": {
    "action": "Save",
    "entityId": "87576",
    "entityType": "Track",
    "nonce": "0xd794ef6f8615bc96164fdeee568fde319913edacb563e97d31a1c15db0ca4437",
    "signature": "0x981a59b92a98f7461c8b5fe086b2d82bd9abad8c2787e955acffe6ee7e41ded2053b547b2fbe30cc19c2c2dd04a723e3770050261ee2a1c70db550b23b7147181c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}