{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x62aa44d8e5bf8fcda2cb54b63d696876a80fa1562d2b0b0925c1734253a3e484",
    "signature": "0xdf4f68485fa4bfe5fa975304964ccc8260b9fcd177e499e676a30f9b915d02775d1f9368a1880e535526e71b889443d1dd286bfbcf575f97ec09480d93b6612e1b",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}