{
  "manageEntity": {
    "action": "Save",
    "entityId": "1515019061",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x508993e854ce92ebea9f5bf83749f8b83785894323f442e3f01a52abf28571e8",
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    "signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
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}