{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x688e6a25eb876caff1dc23149e307dae170208ce2ee408ea6696e44e0b3716a1",
    "signature": "0x3b6541b78d75f5507349e80bb4ebf9259f3cb9d6cb5ad5bb2431d47168ec42df0c2a7b6b8970d14fe3bcba78494af15d3f27d5ce54b283f9790b7b1cd4dc23201c",
    "signer": "0xAdCB73C9642F6d7EC41b0cE3e5126bC8a854bFFc",
    "userId": "853974368"
  }
}