{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "749705090",
    "entityType": "User",
    "nonce": "0xab5c4b283bf31845e9fe17cc728fb713cd1c061266eca82fd24e227c2d1e8bb0",
    "signature": "0x1ef57c38a5b46cde8ac45699e03fbe8b4c392919b7fe7175e65e363a737ba84c006317bf7299826a6f7819ae744698d0b2a61e14623fdaf5318075db9e230b381c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}