{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "147651",
    "entityType": "User",
    "nonce": "0x23f8fff3318b75656fce9a136fe6b2681c6cf8b2783ae4e1307fb62316001486",
    "signature": "0x3506ef2de7bbbf302e0a22fdb0cf184c21bd2c41b0c9ba1f709ceebf5abb6e3b6239b714107159653efc4cb16beb6eb2f408a5cf3ccef084376c00bfb625e70d1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}