{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x947476439fac1de3fbca1fcce55957d453f7ab3bcd389e678e2fb394126bd386",
    "signature": "0x32f715fd88636893b3f79fffed7c15a93471765f9c29fcd806f8c28912aa2ed33026c6e0c17feb7d5a1eb8edec23f9166f206117dabd1b24376423ebfb9a5acc1b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}