{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0x28668bf7234534fde02345e07eac796b27e58c61a3455527f244618cf8537a68",
    "signature": "0x3cda5da64887cae7b24875af603357f612725cdeda49c848ef73a67cddfb66504094a88650039067aeaa6ace828350916097e4f78c0d077705a14777c6eb23a11c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}