{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7b2edc7bdbaf51add877780281f1e8a7820fc4b49c1df52ba8ceb2de477b249b",
    "signature": "0xbffac30b4d9207be38da71680de1b446ec9e8085828aaadc0bd4c13c012affbe25bb96c6b0f0cc817e6ab8b45a50e1fbf05ccebfdbaace2dd4edf3dfff9fceba1b",
    "signer": "0x9c0E158fd6a79ba8384938c72F34b5D765d2A9Df",
    "userId": "178678516"
  }
}