{
  "manageEntity": {
    "action": "Save",
    "entityId": "2029774119",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9c7587f4c09e7f31b86de84d2b7e9902eff100d97d5ad4c9095b432a0581b6ca",
    "signature": "0x36a0f76d6f917dae7343a845086ffdbcfe091f3265995c2f3627b836d6a7e00918816b72cdbaaf5dbbcccc0cb807dc92724185edcdac22edb951dac0494174681c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}