{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "500391732",
    "entityType": "User",
    "nonce": "0xa77a5734487265ad0725278796801ddd27b4d59e80c819abf4dc8bd770b3ed34",
    "signature": "0xfc65e8f01c77cf898c0013b9d5da9b8b3b3eacb59aae183e7864f49ffa25f8dd5c16aa6fc1e573b36242dfe9b8409b12cc7e176eed28f034b68d7bcd961308f11c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}