{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x68408df018079d3e16356b53da07fe694e34b7f3b4ed660b39745ed5544b7df6",
    "signature": "0x87e9712282d1bc3043305db1245f32ef80a2d3fe15d23433a6351a7fbe5e40850a4007b299e237c5f6ab21ec818015ce44a4c529846aedee88f49a70fd1e45b31c",
    "signer": "0x41FF0e9C13C17eAa53E74Cba28CD9D9101440565",
    "userId": "854095053"
  }
}