{
  "manageEntity": {
    "action": "Save",
    "entityId": "2141587422",
    "entityType": "Track",
    "nonce": "0x47e437806893b12e5078af079ce9503329e67000ac225155841b3cc7ae571e01",
    "signature": "0xc2ede6cb6851c5fcc364b97c53d8332e0cf2a8b136ed142031563bf6a1c06f9a05e88b23931830f6ac406fb54b49176e2268d8f857be479e9e3b55cdab4abe641c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}