{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdcf876eeb54f1de12748ee46b5bcc20b9facfbbcebdfd6dd6610a42142683aa8",
    "signature": "0x7c6667ae51747a06e7dfabb8c705d70f4a259057baf210ab0856c7bbe867bf1715dc579418e6d807ce4dc02b42e5486c5cc2e91d9c6d644664405f95cd58f5a11b",
    "signer": "0x3B5fb0Df5acd4711A948e28CA2d44A7f8D7d8C0D",
    "userId": "604192073"
  }
}