{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd89de273d4dad7455df43143d77aadd97447f56aabd8101548daed4c2b415402",
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    "signer": "0x8CB22Fd2b9EE80E52B7B22Bbb5974F28a3b1B9AA",
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}