{
  "manageEntity": {
    "action": "Save",
    "entityId": "714358382",
    "entityType": "Track",
    "nonce": "0x3ff5cb1c1ca1629b253258d89c0096428e255c681c8ea3488f3c05495f7d5639",
    "signature": "0xfb4fcbf9d1e36f9bbffa0d670746f6b288d64069c6dd7399e2e8cdac56592d4b179393f03788af7500a8bc850a12feff4b86569460d82deaffdafcf3943289a11b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}