{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0xc8921fdcd18da54eb52dcb81175bc559cd401d3a49d9b164051c033ecfefea78",
    "signature": "0xb12a5ec8741c59c09b5172f28fc1225c60de8192ca244c1cf9bfa3bae54eb8b0377110509688e6eb44b109c876d740580a96b9112993f4f7d931084b9943f7261c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}