{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689259710",
    "entityType": "User",
    "nonce": "0x267e91d744f35f0f380b9bdf0daa7b75d2016ee6921db5f3cfe8f75e75bcbc7f",
    "signature": "0x6d295bd3ef878cb4eb457d89121d8916e75f10fc73ddf5fa9f0ee25dea5d060e182e4b41f21412aa3e7a39e10266cebedffa9d7da797d6ad25c4fbff52e6f7b91c",
    "signer": "0x038f9CA74f1De4A6D94d94c4C354E1F5B11fd38A",
    "userId": "453233591"
  }
}