{
  "manageEntity": {
    "action": "Save",
    "entityId": "514093581",
    "entityType": "Track",
    "nonce": "0x620ed1071f73699160ad4b04a6e05c4687220685d486a3b46c95788d94e43de9",
    "signature": "0x02d33c5b27b205c3506fb45bcbaa2bb7f554ec77efe463f1391c98fbdda795237dd19eadd10efd7e19c8e1c9bc35b7f70e20e5e88f287578c74951ade4ddf7fa1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}