{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0x35707e076a9af4c3d76b51da0a00088e7d823862682a63fb383710f09c503e42",
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"signer": "0xb3A9A4e99106cfeb4759823E3BFe3d3CF3eDF146",
"userId": "748490297"
}
}