{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x17f5597c9819d69ff7db2bf945894069251d6bec6749e30fccaae8f31bbb3261",
    "signature": "0x6d83551386232a6da7ddd2d12ab0c9d9e53be2c711397c9ff0f06a4c5460d95019bf35b100703e172e9d2230ede1ae7e86693a9f1cff57ce61235533c531b6131b",
    "signer": "0xC789b473E10EF4b57f078893a38DD5E462d94368",
    "userId": "564344"
  }
}