{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0x5551dd94561c325e3e5deb030e38768a756e53413ca0f3d933936658d89b32b7",
    "signature": "0x13dbb4f035c59a895254d25342ab93dff991fc31293335dde33fe47a9f25b4760ff78c37a21208db74fe8e5fa480ab3b387f6343f2acf7b1060ede49535555351c",
    "signer": "0x4787CE03de21Dd66aEd548B5eE0786E8cbEbF804",
    "userId": "768321185"
  }
}