{
  "manageEntity": {
    "action": "Save",
    "entityId": "1444828633",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b41df95ba17c01ae3e2b17f792dec58cf92dadbafb54137e6b2102165249d71",
    "signature": "0xad08b2e2e239e885e8947eb8c4307897b1bce4578caffee3a02be2de948217443f3249ada84a2b6c692f704868c62918bd659c9e8a1ffd0af0c0c6d4690abe311b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}