{
  "manageEntity": {
    "action": "Save",
    "entityId": "1414383996",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf86812c0a3ddc25f5914e92aa97a5760164d07b7bc39be39bd571c85efb6824e",
    "signature": "0xda035ef4f1f40168a08742a8030b6c7f99fa1f13c3a8fd6ed0d62ffa1729acbe7ff7bef9cf16866082419918c76163c2391134b59ef5f94c676abd4c19e5f9bc1c",
    "signer": "0x261c17dd7171Ea18B7ffF1AbB7D0495fEa0dB0ad",
    "userId": "185086709"
  }
}