{
  "manageEntity": {
    "action": "Save",
    "entityId": "587599",
    "entityType": "Track",
    "nonce": "0xc6ee1272d9a80078fccda99a92b34bd926eb39c3022bd1fef15ac6dc3efa99ab",
    "signature": "0x61c4fffc63d32c584980452f3ffff3df207ec2cce5231ccfe645c8a760bea8e16d439abf3314cfe11c519b134cf1ed63939b4b9ce7a0a71595c20ce0f8ee31671b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}