{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "516843970",
    "entityType": "User",
    "nonce": "0x38a234612a45e5e36ccb83fc0579c72002bb14908cacc8d2ef87e6320a5af378",
    "signature": "0x5d63edaaaeaef8eb8722a4b41dd6c4f959f02bf38611fedc2edb469b6cad9eef07079666bd81f087502becf9307b4029afdb0740a1ba90b8bf8c93ebf95b263f1c",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}