{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x178cbd64272fada066a6d388fc82d62c7741f8205ddca5e3a7f7a32046920d43",
    "signature": "0x3624e4e5b1679d349705a8f7117b335a3b0ffbb7c394feffa28a4d443f4775394bc43bd5ff9793ee1771535ba65c748b02b6489edc49ba1f7c3e5b9446f38ef01c",
    "signer": "0xFf6Ffd39AbD6a34Cf0cB3C4346205c902dA8093E",
    "userId": "573973668"
  }
}