{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xa0e50078546f5bfc2f75481208a9cf35e7ee0d0de0ebea07da087f592fc49849",
    "signature": "0xa7940ee6b9d5c5b9328cfb0a38ac8c9199a22622bb761f1375bbbdc15567ee1c261f4a332bea582d2013e63edc4d9206aedd711f765c439f310263efb57796911c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}