{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340591",
    "entityType": "User",
    "nonce": "0x7cad3d4cf400eba505884b46783968c9e130fe1f78525911b8c789081d4a890d",
    "signature": "0xf251a99d236586df4f1b88036ae1d7ce7d15845274d10ee2599de521d7e986f1448a97bb6474825d3b0c7a69cb2cba645c95fd5297e8b81df1bc8e8897a34e801b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}