{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfeb95d94584179aa310f9df3fbf290b7f71bfbaf063afba41639b0c39e0aa067",
    "signature": "0xaa2da356a3d25f5a404ae46f90270c591b7c539d3ac5c26137c0b344e6fd006d6b7768c13540d959b94ef9c66fcb8eff26bf886427c1012e5c1844071d5b2c061c",
    "signer": "0x31C077B1b3cf0d25FE245554344C06D104Def192",
    "userId": "783504001"
  }
}