{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "533815759",
    "entityType": "User",
    "nonce": "0x538e40e83cc272eb70a084aabca390e23c3e39f293f21bd9e671c2a4d8f8d409",
    "signature": "0x46d2b8ccf877f2996259f76624aa47bddf41438d21a543babf86c465a004264504c5470f41b3d91b5ce9f5a831cd9e0382d526d1dd4da0777194c929bde020bb1c",
    "signer": "0xc3e03c21664729d32A8E77189667f4cC5091E233",
    "userId": "498109"
  }
}