{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297345",
    "entityType": "User",
    "nonce": "0x293b425a4d49c5dfd5ec647c7d16ed5372a6b60165fa46cae28a6d12f2102fde",
    "signature": "0x19d86340c6212dcec50f5b149e0ed6b5a89787492dfbc8dacff0a4d6d3719ffd5e705758cc85567bebc3b0546adba534089faed4de06a5aabe964914e93f771b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}