{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x07561329442a70327f6973f9ff5c27c12e8e74b4af1db173779fcdc96e2ec02b",
    "signature": "0x4d15028ca1cfd0f4ac3d1ebdeb06885ffe08a8265f9405efa8966307b50b36a373f200b1f942a536466b242fe38cdbb935fe63fcff5948f5d38f4f512b17fb6f1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}