{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xeee93fb2abd900430e00aa56487849d05d17bdc8d7642231addfa8dd9755e24a",
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    "signer": "0x4D386A3060c2b887771faBC7ab3462336663fAF3",
    "userId": "271191164"
  }
}