{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x456cfea4e3ea4f0c36eb7db5b18321a65fdcc26bc844c16a06a3f2c31c5ed4be",
    "signature": "0x9b93baf73f55a7b6cfda2005ca0b1978148ee07f70b86a47e93f3ca247ff52a61dc584c187e09036f3131079f34d83cb492399831e0bf295b1eb4790545f863b1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}