{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306603",
    "entityType": "User",
    "nonce": "0xcb676d009460f8cc2ccf7c86880be7ab8c2934e135f230cbd5044a08e03335ab",
    "signature": "0x25b29a7b3df4c7a4c9cef11d746db201d38575d457c25a5defdc4dc3ff4a7ba946d8d58c427ec497ffc306362f43ade71e347167bfaf0a6510d000b61f471a051c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}