{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0x4a758a1c3aa12e328bb4aae086a7e89cef6ad330a15dbe8333f1e41b2ffcbd49",
"signature": "0xb996237ad2960e56ee51be39b8a1dbcd2e9e0ca9027ea58b0d4ed21ad79de2e908178bba57f28c861219c8979eba9a27893181ef211032d7e976e3aa86355d761b",
"signer": "0x2830E3931b17C60bA63Ef39B7a2479245EF19102",
"userId": "843610726"
}
}