{
  "manageEntity": {
    "action": "Save",
    "entityId": "181000867",
    "entityType": "Track",
    "nonce": "0x158a0e45492eca0ed7dfa75430d1396bec104bc993f4fcb05107a25643e8f756",
    "signature": "0xd038eef13330bf4e68d9977b7b628c2af540b8f3a2384904b2d3f98d87b5755c0a3c178350ea4bce12a13b80594aa5d2c5dbe23cdfa56a16c0dda4b3f41c157f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}