{
  "manageEntity": {
    "action": "Save",
    "entityId": "822589584",
    "entityType": "Track",
    "nonce": "0x5e9702ed233f98b377391538aa22baeb4cab04fc7c2ffc64c6e7ee3628309019",
    "signature": "0xd21ee25d3948274fe326a742b55d4beaaad075f04b7a51edb5471e1420575fd54d47137a2122d5d4b973ed831db658317a8c9c539a6ae88111fefa7a85bdb6011b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}