{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x13557f9e74b81ebf9040c24ef3d42f6c9f53726c523d8909d2df87464ef1f86a",
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    "signer": "0xb3BEf78D87738d0DeA1b176317F1db0BAe3c178E",
    "userId": "701187214"
  }
}