{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372741931",
    "entityType": "User",
    "nonce": "0x1bdd3bcde1baf108cc09e0953a754531a8521f7a08ec897f37f6efa0743bb327",
    "signature": "0x09a75ff995f3425fa91c4127211b210ec9ecadf3c26362fd7e597924a62332443cd734342ffb6d2dcc1e877c3b8804cba00732984593475e335ac5e9d2268ab81b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}