{
  "manageEntity": {
    "action": "Update",
    "entityId": "397129323",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1951e6c2c12a792acd00a5f3fe53c6a9688586dc785b4f1fa5773a3cef8c1bee",
    "signature": "0x10d3ad8e4c2f735d8f983aa1d3907def8e0600fe9113171b9ae7cd804fe7ecd018016de11d9f9d2b75a298adbf846cc9a45cc5f7400bbfa9e736dadb785b84641b",
    "signer": "0xFc32c4a1d5F00e4c3A665bae88f3a63d47BAEa43",
    "userId": "397129323"
  }
}