{
  "manageEntity": {
    "action": "Save",
    "entityId": "794649373",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xabcd9e5a421ffc7c95d68856828d2b4fae66a44ab8ba5ff247821bcb19990ff4",
    "signature": "0x0b8ee48f551cbd5f829f6ce9cf7d7903797bb556a90864a9e99e4f425a04381307f2ea4eefff125bdb55a0240eac0178f02464d5ca4617964fe706ecd54badcb1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}