{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x08503562c15800655e0af53aef214d157709dc1c9973f8a98fca80d49c77863e",
    "signature": "0x518d4e04893e60fea6c813e46b52bc548ed0ffb9e8ef32f6f8ff81aa6f5e6b95190398e448e7cfff59e072f329bcc004f7b52fc8063bc93461321a96b00061a11c",
    "signer": "0xf0eb585b6d27A5d2d9fac81774d96649D1AEDf6f",
    "userId": "158433016"
  }
}