{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa4ccf9e2ea06f407d05346dc4bf23000b62937f003912b969e9446bf11c3939e",
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    "signer": "0x2607197F4148fb3F95c8e4b03827e63b3457A751",
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  }
}