{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x1199486d6baf8c7c5252ddf037c77ec6805084a39a81fc9f4085cedc93f61c13",
    "signature": "0x2a517e0ea1e462d409fdc25f69aadafa2aa566f2f906ec5adc895af8785870882e0f00f7806fe8ce0bf8f40ea540bd9f0e01eeabf917735fb34302c0832f95da1b",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}