{
  "manageEntity": {
    "action": "Save",
    "entityId": "263168600",
    "entityType": "Track",
    "nonce": "0xc06d570cf5bfe7ae29cf8b1b1889d2e72c07498f659ba237e7b26487c0770ef5",
    "signature": "0x32bae820051105e199255415a2a1118f40b0bb7c70c0791d56ac38d9d5a729395b7356f6ae55f07fe396ba09cfc63612300a635fb1f716a4b974cf2d13dfdd921c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}