{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240783916",
    "entityType": "User",
    "nonce": "0xd753763912b7db475cd0626cf57f5c5d14126fa443669524212556887bc878e8",
    "signature": "0xa96aad22c997844a06cddfb3630441c374fd3d0316c1b713ce3bda79b0d89ba666154c4225f050b4e618b15c00dfd795f21c168deb4e9e670fd3f2df8c221e811c",
    "signer": "0x39788E2D020D54760872178Cea0d5AF12732F02D",
    "userId": "720903941"
  }
}