{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf90feb4a25835deddc6d89d127e981f50b0d2ce2cfea2bc7f6697ff7f7522e56",
    "signature": "0xdbd1593bf60a6f7eb648172fde49059942c9b8b200d4d127483c125dc37c1ec270263565dd23fb9d99a18acc47536065587414a15bce6c1c944a480850e124071c",
    "signer": "0x77cb130b1664552a46CE1e3F31b74327E6bC051F",
    "userId": "57028062"
  }
}