{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcbf08834ec7eede1d0fc9737a3c28a642cafeced1348b9a42986a4c424d08aa9",
    "signature": "0x21ed519b7ee945895d419f86a58ec06f804b528aaa29510ca234aff9c7ff0bc85c97b21c43e3ff5b7a204760cb33ebf384e45f9e18e927d835e5511f2f8fb00e1c",
    "signer": "0x252D5DC4748Db077bc60944947dB2Bb8485B9b05",
    "userId": "902222482"
  }
}