{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0c08c727fa8f82fb642db3e3041b4a16908d9623e9ce82d22b659e51ad02e8b",
    "signature": "0xd61a0b278f899b6ce6911548d612a32ed2ac8bca20db5a1780b1e3416ebaa1ca314267ee41452ed1fb5cf8263488fda713ac1cb803341bad762b0211a1e3f0f41c",
    "signer": "0x6F73Ed5b48E50D64778fD193C7C5d158a46b41dB",
    "userId": "107517858"
  }
}