{
  "manageEntity": {
    "action": "Save",
    "entityId": "825048217",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8b0b366173700ec435a3a5c79bf8ca8fa2a25cbcb5db672f5229a8692f1d6c18",
    "signature": "0x6276cc0979c63d36feff09e824575e5a1db6c0b0b4d98445b45b70e713f6aaed79e2ee246059d42a79cf5b2be094eea6ffddef074ace7a68bfd621632f169c8d1c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}