{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a3f9a56a9c1322f8b58f93e11c2d4715b38c184827320f82a16ef7c884f9157",
    "signature": "0xefc740909392de26ff81f18ad29f8a420265872b5b9674c899e1c555e07e93516b263c81990b2efee8f9c13c9c1a2b8dc86eaa1362b536f08d8825350b3654251c",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}