{
  "manageEntity": {
    "action": "Save",
    "entityId": "78391",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6d50538fd71b3b2722c28f8f171f9beb77889acbf42fa8a5b799226b909652e6",
    "signature": "0xd28ff400c9d95e09ee422606f72322bd0725805d6111838cf36a85d568aba19d7d4912ee834cad2619b99d8f3ff9e66e17e1faf9dfd658e3ca117af28f3b37141b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}