{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "595768441",
    "entityType": "User",
    "nonce": "0x370f9c53dda42f95addfeaf0e131c6940b6eaf41ed66dab73b15ac9bfffdea44",
    "signature": "0xd45d68e4bcea1394e4758bca07fd7238a62d4a857f94915599d4f0637e40eafa092999d94e6975a1c7c2ac1b4ac2e723f4c0503c19a2ee8bae54421cdbf34d331b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}