{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89da1755a25ac4d5a31bce2a45dfb1a3edbf8614275603209eec4bd194cdd1bf",
    "signature": "0x04fd62506edfd3e7d453498a21727e2dd314aee897f3b672444b65aae0ec64ec02f823a1abcd1cccfc26a5b0caa850b54d30b2973873a3e63d5195971fed47f21c",
    "signer": "0x9Bb435F20E92A2A14c15eBd52B68eb305FB14e67",
    "userId": "858244647"
  }
}