{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x0b6b33018e2ab60af5ba54d673f9c96e10f6d90c75e64bb9c1097254e7d81975",
    "signature": "0xfdef2789f8a4490975a5f630d3a0af3e533e0d705830856fcb8ef798123bf7f471d1584d8d4eadeafed00aa101b5b8647edb90d3a376dff1e64ef82b6f14ad6f1c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}