{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377839503",
    "entityType": "User",
    "nonce": "0x69b0ee6204ca5b514c1a8d869b6bd90a70e34d00d941e423cd570e2283e58538",
    "signature": "0xb64b0dd2fa90929126a5919b40a27b99f92fa55eb5268f9fa8fe9eb95a45d681632424c212dc2a8244b0f59251419352af0976504fc3df5b3b1393d154d113ef1b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}