{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb951f83a893a0393ba4dc5885f8b855460f0d94fd262df263cbd7cf0f75252ad",
    "signature": "0xc7647bbca8ae30a1582a4b6be63ba2b27ff7d67d36040913e828d9356bfa63302d9e4c021ebef52a3810df302fc9c69d554c2b348572fc6ab88705453f65d66c1c",
    "signer": "0xE0BACCe8367A209A455f8d23FbB99203BDa2D178",
    "userId": "517808017"
  }
}