{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210853",
    "entityType": "User",
    "nonce": "0x956522a6bd49967a1d1d3052f3ecbafdc2d37a9b501df196dd95798affceba9c",
    "signature": "0x0bef334ce5342c56125d112ca218f1a5fa259b9e2e0438914104c97e33aca6cf326416f5c3893b04bc1b4024134212488a7b5251a5553de049d4e6f9f6d4f6a51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}