{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350499018",
    "entityType": "User",
    "nonce": "0x3e26284faa292303e22ccd858a49a42aa859d0190de99b9f86a6740f41a7252b",
    "signature": "0x854b36152e14440fd0c0a3ff7a47a4dd25aeac99e439dd4aa46d1a3bd653d35e5cbeeefdc42f74a7148f5dca11579d9800f3466779b196d10886fa32365b44de1b",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}