{
  "manageEntity": {
    "action": "Save",
    "entityId": "2071514213",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4a9c7e4458df44e3560ef5c2b925a987adf7741e5e571ce34ecc0c70b2658c0c",
    "signature": "0xf28286997e0d4b8a2fbcd3bc0b61daf2780e9c6a7669884190a9b2ed121ed6d9243bb00dd31bf37bb92fabdb2b918f90ef19ed4f4715f36cc6f0e4036acd787b1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}