{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417659511",
    "entityType": "Track",
    "nonce": "0x7d02acc789d6a093abce3cfc3422e431a8670818371765130636b90c8ba75cad",
    "signature": "0xfa7e6a42b9713ea84f2f4d5e295576d87b08a35f378194adde73166b73bc89df3c0a851346e53d33add6539792e13ad36e5161bcf604374d2832c54f49a97e181b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}