{
  "manageEntity": {
    "action": "Save",
    "entityId": "56787",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4de0bdd2de856dab0bdca0e397d214598760465e36324903b10ae9ae22870771",
    "signature": "0xb1e868fccf63df6b1803d0818550ea17f72f08459e41f30f41aad8aa10279f8b09a2708a46ce596fbdd8331589df4ac81fb0c0be9118e8f5e40b323815cdf07c1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}