{
  "manageEntity": {
    "action": "Save",
    "entityId": "907647206",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x04fb262d315e0210ddb02efc084baaf9e2ed5d9ecdfc8ca403e03a394bc4a489",
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    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}