{
  "manageEntity": {
    "action": "Save",
    "entityId": "996161",
    "entityType": "Track",
    "nonce": "0xd834fd6590aa9a6484463911024d7c02463cee9a02959a6e3e2bde13e5467da0",
    "signature": "0x9ced85d64e5bd3882a90c43e980894ff730f032d0e652266525741dc3024e46e76168b16b64ed5d308a069205ec35fa6c7d974a8e074bdcdf3dae829792c4f611c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}