{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x58aa86fadce96e0f048103499d00a48cc07475f45fcd3e7cda9b6ccf2b37fba2",
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    "signer": "0x27D122951c1E664505873CFc671BD727764e8e9e",
    "userId": "313852477"
  }
}