{
  "manageEntity": {
    "action": "Save",
    "entityId": "373369402",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf36812b7fc36c9c98161230679f13827bf75f0d39191d46dbbcdb63267f59a98",
    "signature": "0xed8faaf3aeacd937b369db96d649f8f99195542e0f7b864d4ba37820d776418516602ed31f502a73fcff0edf997124da3e13bab6be6c477f6cca457bb70394bd1c",
    "signer": "0x9c0E158fd6a79ba8384938c72F34b5D765d2A9Df",
    "userId": "178678516"
  }
}