{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb691b0229dee7f8742f91675f70c96b353c137f8df8a88ad1297c008a75dcfeb",
    "signature": "0x474b3f673c500bb624cfe34504b94d49d1199c1dd50c5b0f5ac31723754964cc3741d646167d87ee2641a37534809e832314520c0f4f02a0754f15e821343b471c",
    "signer": "0x2a14233e1f50922EA23fb817931968707B6A04c0",
    "userId": "727256442"
  }
}