{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1655340",
    "entityType": "User",
    "nonce": "0x236727ae1cc923b3bb6a0bb7b64ac5c5bc74439080b06ddfede6a0d900424140",
    "signature": "0xd65f5c7b1cde6104a482f2b1097e377da42d612ea2cd5b0785b6ca7eb65ec3b07cf54751de52cd6cbe9e259530b7e257c4e5e5ee45db6edf46b6bdf47ba0c8311c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}