{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x48d96d81c8fad2adfd0f32911fe2a97d50a57499364db50a59c2ae94b455ff07",
    "signature": "0xb140815cd53283f417dc3154e09dabf9c6879c3416bddbd972740b7e267a61d803b8ee801a8a42d70977cfec0e6d2869b649e38418200d025154861b09d109c81c",
    "signer": "0xa8B3a827Bf5b7aCd6fB1ED7Be940E2F4D69d710e",
    "userId": "599312431"
  }
}