{
  "manageEntity": {
    "action": "Save",
    "entityId": "953351208",
    "entityType": "Track",
    "nonce": "0x92047694186a0898615b36aabcd808b15aae5565f06a6c465ea9c7ac98d7f8bf",
    "signature": "0xc8af55c2b5f174cd14a3bba01521bc5b60d1aeedae7e3fda2ae001ac25baa5491a2865f0bebcc50cd1fa40e0eed74d41f9062b748d878c8b3569cccecb7f01481b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}