{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1c24a81d7a8c316e00720674b93caba40958a0c77b1b939ffb8cbbbfb65f9245",
    "signature": "0x24b316bab21db591ee6f915e69265acfe834fd3f45a9e0f0d86a8ba7e74aead80b36d095ad5f549be0bb0194f0b4118b506bafa940d8e1e7ec858e8d1888d7461b",
    "signer": "0x56581eb3E77E81fd456d0F89d5872c616859A859",
    "userId": "829555556"
  }
}