{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7ed84f8dcf5d2d5c23d67550330e95a2f36b97ea33f4c4191be092b8669edf64",
    "signature": "0x4d8421a60972357604351616e6cf3cbd7cca033f7c6caa4089fb2fdd0e913ca14681cbe621de482a6e2c90b002b730103a1ebfb44f7e92026b2af961fc725ac21b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}