{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a55e8daa8cf28e5fe8a3c0c063468743a78671120d6925b429daa3249536358",
    "signature": "0xb90a1235f24862f6f99c04492bde759bfea48e554313f4a5610e290e649723853b635ae171481dcb37cfe8bd21f83bb5d5f39e77c3ec727d864c7346639df2581b",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}