{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc7f03b0d7ed94cc0125f1f226f107d1446f3f528755f4ba17e5dbfd6eaffc753",
    "signature": "0xd49834059e9fbc2e56fa366dde5e4afde487b3a7fb65ae44d421761673d3126703966f50bae5c1b75fe3c707b06f87fbfb254c386cfcc7b51c53bc79f641e0c21b",
    "signer": "0xd14F1C92971A04df28F198D8a9Ed997A72a7dB86",
    "userId": "286683016"
  }
}