{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0xbfa33d189350b85e86a0f4834657123ac90e34b5dff6c499c0e35b41e388c165",
    "signature": "0xa2450a7bc4ffebbc9b2e1f13eb325c92d9cab81537487424c57ff3e782df644b748306ab0b7ccfa9d30f6a308837109d5e44ef18b16087b1bd2fae824d83bfec1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}