{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "224498",
    "entityType": "User",
    "nonce": "0x3199dd6ddc406b5b60024ad67a119ed18bb46f4ea62995bfe317d4ef70fc68be",
    "signature": "0x6e27fc6210a2c8e51259b3fc954723b47ee8bd9af3f3fcaa98c0098a2ccd052521f4c46b1ca322b7350765ad15740b30c5f05545af8b8bf3069811ac02167b511b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}