{
  "manageEntity": {
    "action": "Save",
    "entityId": "1299924151",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x47686d612680bc0534af93d4afcd2b254f970b26955c4ae2063770cdb8d98358",
    "signature": "0x06cc02f9062e8d668d63b6c707e6a38c8ea5ef45fd4cfa324925270e21dc63d66dfdd69943cd51711a7e3d4c1c01e353775a2f36cc9b1a030bc2c3ffb06d074e1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}