{
  "manageEntity": {
    "action": "Save",
    "entityId": "235207",
    "entityType": "Track",
    "nonce": "0xbaa781c86fd0e26c5a4560427139d0fb346ee8da26692b823fc3569a19e2baef",
    "signature": "0x6a9445dc003855d84cab2ba055e7b30791a3ac0a85f0d00a0a27d440e8339f313788f416ebaf263a851a5915cf6aa773bdeacab7461646a4ca9423bd2e37ae011b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}