{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641477229",
    "entityType": "User",
    "nonce": "0x1425417c0ba690bc9588cf2a25184f148701ed881f3e83303bae9d5230483854",
    "signature": "0xf54b476ec2c1398e71f2f9fbd8558fdf49532d3a7db9416608d69c396f9ea564180883e9bc29e1fcf3e29ba186deaa32618a5ac691a985b99734b62bd441d2611b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}