{
  "manageEntity": {
    "action": "Save",
    "entityId": "1888073814",
    "entityType": "Track",
    "nonce": "0xd5b414a23324184ab724f245bca3e66d82760399c63b782ab29b1e3cec4ddd6d",
    "signature": "0xc6ba733a16f9763ab40de67a064dde984a1e5eb9602e3d5dff8725097b0ff08b1f5ad1365e4db5ccb0fafebfecc5d5125b760339bb1cc7f7427f37893520f6f21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}