{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16634",
    "entityType": "User",
    "nonce": "0x89751869e8529e58bf2250237f986c4cb57e6d9d68a46782a56847136e824bf5",
    "signature": "0x2dff08dee038977c58abf66cd2d363888e11ee27b63e13b3c99b02f08500bcc924bd6e34b5b1267c49da0ee2c58ec15b472c09487c2ae3fcde637a220ea3fa831b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}