{
  "manageEntity": {
    "action": "Save",
    "entityId": "1166209473",
    "entityType": "Track",
    "nonce": "0x7eb3fbb39b75155f927e0fc378f01f51f652ef814e572cdada468fbbff1b565b",
    "signature": "0x44f30bb774492f345de39dc2d65793afb0ba1179006072c00ea9037a780f931b3b3a87b38f9d163e95f742a76be032f7fefd9802962019fd84a1716d4f44f0e31b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}