{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103748",
    "entityType": "User",
    "nonce": "0x8e008cbcf46ce75d045659678106e20cff8a7f701fa69c21ccaee5a621210319",
    "signature": "0x9147cb387e5b89dd042036b9b7c916467cf06ec3050e710ce90e45064c81d6f43ddb1c14691405ede1e816f65191b08f8977fc3ebd1874a5f6fa9a1cc68ee1031b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}