{
  "manageEntity": {
    "action": "Save",
    "entityId": "1214806379",
    "entityType": "Track",
    "nonce": "0xc847f9788126fc3e5e6d88bd2e1dac59c7e95f2da9cb93d2f20cd683a39622d0",
    "signature": "0xe7a086036835d5f46a7b981fc364033a259d2074ebd853e7e9c34cdc2ce0b42f440adbf3d2981b47ff628005198d272861ffbb77b0f0cd4a776b42ab67f68b801c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}