{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd30ada91da67e53b54e00c4de3ea2a215989885af277bb964a2f1866c4edd872",
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    "signer": "0xeAA96223Cb5BFbAe82E5241FDc078641C3d8dF0b",
    "userId": "608606779"
  }
}