{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774076",
    "entityType": "User",
    "nonce": "0xc7787ff3c8ca98af2779b46398974695e46e3ae1171adeb1cf8c24237d9146a3",
    "signature": "0x2125daa723366ae96600f262dbd126bdbf9a05321d1691737cc315337da815d533a925b6fbaed09fcf3620fa100abb5301edd9f9c2c0214accc88925eade0f161c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}