{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xa8eaea987e4c499a72dac146a7b660b1064056ccac0f665d9287a840ed8fa8d4",
    "signature": "0x5e80316529179cbfb26e8e82b10db738f5898084049739e9ea5864285b8b1da65aa7513d3a2fded945fdea3e7f93c3148586e574b7f8f3885508af97cf1b9f6f1c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}