{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303691",
    "entityType": "User",
    "nonce": "0x8e87adecdc796f1fc8f2a5bbd4f78e0dad940bb17445dbc3958c434de92050b3",
    "signature": "0x62a5f35ef193a52cbdc73b77cd4aaf3e6f3c225970abffdc5b0b2423ff93ea1b1db345f67e4deada9ec1ba6a9b9febc145ecedb32af12864653668bb6c1f83a81b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}