{
  "manageEntity": {
    "action": "Save",
    "entityId": "636326995",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1f867b7231c760256add4500f14d0ce915630efdad94f1b7de77f9f08615edcd",
    "signature": "0x3cda04e305df43a3147cc6d138d8520742d469e302e20053c19ba652c26051b7794ec72dd53502f9fa5265bea277cda8370a8249b29b4a1ef7ef1ae48dd8b48a1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}