{
  "manageEntity": {
    "action": "Update",
    "entityId": "663938311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x674b72817ba51095ecb9fa07c063d6b26a498c31170b90200bbc2535ba56c8d5",
    "signature": "0x7afe7b577a89a32079ed7c2abefdf040b4fc6ff97ef7bdce84915445ef9db7d660ac5a5ac143c529c294723c8ebbe26e4fd17881e49b779079458c23ae9c35541b",
    "signer": "0x4556933C0FaB9C8fD74eBF62D61DDE5430F04D75",
    "userId": "663938311"
  }
}