{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d7db5e8c6e1ca679613f4fc572f33a56ed6fc673334e87caefc03fb88204021",
    "signature": "0xd4ed32ab075e653595e8b4bca133963be7454b6ad52e0e24bbddef033611a73b216f10cb0c9be74e8836efed4a5c08c30a65bce931e163af450da8bb32825cc81c",
    "signer": "0xB8Afd8d47cD4e8405FAc512911dB880574bC66C0",
    "userId": "56351909"
  }
}