{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x645ffa09e6df5cb84634c1e646d8e9dd74f92a705dd0565d00508ea54bf7a617",
    "signature": "0x8fd90a4ac0d82209f9fa3a395df7db6adf933ec3ab19a062a9e6f381b2c674042f8a4ac3175fe824cb46d73e2525aebb2f3df67d127a87c20425d28f017cc77d1c",
    "signer": "0x2B1530b3d65cF43ecAf122F062803F2B3b284F5B",
    "userId": "891157649"
  }
}