{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x752d4d53282adb6b7f48aecb6b4edc6bf43548c5f47015dd4dc4511c7982c59e",
    "signature": "0xabae82f75b37061fc4fd2909b0bc72926f05919e1654a4d3c044bd18a29f4dea75c4a300e38a4b932979c5b4540aeac089f5ab5e451f90ea25ea34447cb9531f1b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}