{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194935",
    "entityType": "User",
    "nonce": "0xb722c67d18d48025f74a081ef4f6e8c5ad18812e47f961269bacf26483a874b8",
    "signature": "0x18581838ca40c4964d0c324a8783fb34c017ee027a96c2b2ae6bf35f08e973e27a01e0e48e1556e3a5a2785d6753ad5f66ed7aadce4e415090d3be2ac58e0bb61b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}