{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "690929",
    "entityType": "User",
    "nonce": "0x88e8a608cacaf920a89d42f65999c85fb5f5432429182bac27f3ad0bdb58f220",
    "signature": "0xf6e28a642d534ff895c17f5bff4fb9e09406c711c86a589f4e0217101f1ea2b751c604ccf772bca34c2dbfb075f3197eadaab7c00308f7aca41233016d53a95f1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}