{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xc74fcac8f29debb1c453e3d41595d7b000e3c8b2e3cd76026618f55276e79159",
    "signature": "0x0f278b146b8faf663d8334fa6e50507eda1193edbfc8d6b621bf03a9fe3068d42c1a09332ef83fa216092ad2816d657b3dfd9fad7340326ae955e10de288dc541b",
    "signer": "0x9d5d1f1a59bB255396F7F1e7DeB307A4F66f15ec",
    "userId": "429311703"
  }
}