{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1646940",
    "entityType": "User",
    "nonce": "0xd6a6e1bb02c8c912b0c7d7575c45e6af4bbed340156568ad72e7f97a0721aa1c",
    "signature": "0xce8c8ed95287d23abf8cd1ca1e036603753e4d4fc785ce988e001a45cb51298d435ad40a4c5c7b9dab06835ecb669390ac56e9ac8786733d410c9fe19e026b3f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}