{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0xd8de231ab5a31fcd7bad70ca6a7d580fbdb7c5335b1291a6b2fe07934f02b8e8",
    "signature": "0x5b1fb87a9437a3bfd9f5b6f7b66bb635df90175a0fa11e2824d9e376011a689d7fcd024f01a2429a917c2243c47799480d469facc53702185bf5896de97c778f1c",
    "signer": "0x2aF04528b05939B9f7F5D99Fd67081660907b6b6",
    "userId": "3541"
  }
}