{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x04fb00b312ef9ef51408f2944c9826a47cd8722e6cdf56e75cf8444ef17011ba",
    "signature": "0xbbd655cc1509ad22191efd3fc43f66f0dcb273fea3850930fd3c9e7dc43848ea3b00f1aa7e3cad48d3fda6d6c850fd833de53dffc3cda1937024c89613606b851b",
    "signer": "0x5c8AfDEAc05FbB157876C04BF36E221C2318278E",
    "userId": "593502567"
  }
}