{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0xeb05e8402b9c72773b8f2a380f30d44672e7b40fed5b8a3f44ead3e1c16f7fa9",
    "signature": "0x42f69a5e79e0581fb60e74cb43d9563061d4b954d10f353cbc7ec123526d694d0f2dfaece40ffa3c598cd0ff71431c18aad0358a8b8cf87771710b0b4fd754a01c",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}