{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7548",
    "entityType": "User",
    "nonce": "0xe3cf4bf634d26ea3d08c4f7d42419144f907feae997886c6f3552f8999ba6ac2",
    "signature": "0x658fbe39d118b7833af2fee99633552d5b8af0c9f3be0510676fa9c360f3d80153e979d8c2030471f3fb00244d21edff0c7f87d40f4c1369373cf7b343d0477b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}