{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa48600a7a171dd60de8e8b9a3a9f88bc5cbdb099ffe6003da8bda7b74d086040",
    "signature": "0x5e68bcdef37fd310231870b5d3f9a4c6f1e0739c9c19ce119af568bb2d41232d279e612dedf6cfdef3c98ae79f6edf45ffaed2e4e94bfcba260e82ea7f250e581c",
    "signer": "0x2966939814Ab7956eD0caADc32507f5Fb7298e8f",
    "userId": "921139103"
  }
}