{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xb601c4470ed195351ef5daadca3b95d0d68face51bf4d7a6839fbebc61825caf",
    "signature": "0xd3e7bf5d4262e64e73c8de13289f3b87e04ece0b1a5ea6198045684fec44778a3db23d0c848e352925d8928cd9f299cb9958d2ac31daeee0bca9f828219cd2451c",
    "signer": "0xdCEd2038393702F47EfF3e1fAc5D5Ffb9abfE03b",
    "userId": "883672014"
  }
}