{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4fff144b8bb4426006f72483f960cd84232e88d21fe9438d70a506e3b6254ff9",
    "signature": "0xb3f6e890e31fb8ea00fe38b818df697f4fe3c017a99552f949ecddc81c72e73d3261d44fad15d153934be4aaa6a99049f7e934125515c8bf3cd6bcaa72c538a01b",
    "signer": "0x26f240Be07939c83Fd72792d614Bda1624022E00",
    "userId": "435191941"
  }
}