{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10004",
    "entityType": "User",
    "nonce": "0xa4409a27a0705d7d4f81202011feec386076639fef014ba3ff0773a67d265a43",
    "signature": "0x5c3943668adb774069a6949a7e1442360188ab6036f3955b602789d947caa54a253c4875936760d3980c29633ce5e875ce8c29c6ccd9c944bd2d9dedfd4d70a91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}