{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbd7d4ebfdd0e7967e5b657720b30bfe4c70ec9c98f6fd9519a406c040f24f0c3",
    "signature": "0x7c3e205a097a12b616468655ab0b0f13dae88cc55371a4d849dc3418db7846fa6c31a3dbcb8588078ccccc3bf224ac62c9e4528bdaf035d0c0594c993ec7ea251b",
    "signer": "0x575469aeC38879f6875E4A873418767be2aC42f7",
    "userId": "690301336"
  }
}