{
  "manageEntity": {
    "action": "Save",
    "entityId": "636326995",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x22594964b5872e1a3d6f32a5a8fc1ecdcf8d7f7ffe34acb0edc8651da5d4337a",
    "signature": "0x95a57952ad050e9d7207a29258fca87891d2e85b3dbe19c2e0a05279e985965a06aacdba70a5b9476d3a7132e69e7c5ed6c28cbbb6826eec24a104be0279731d1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}