{
  "manageEntity": {
    "action": "Save",
    "entityId": "362011713",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc290fcce482c201358bbd7f7e73cb988bbc282fc767c29c4b58ac2acb6ee77ad",
    "signature": "0xad2eb605dae355f787ef5e1f51ea16f03c6491464d2c02edec40a175390a485f61a11df63cea8ac188f55f4c5a99035ce3383eb269e9bff2a99e6a921721385a1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}