{
  "manageEntity": {
    "action": "Save",
    "entityId": "795892878",
    "entityType": "Track",
    "nonce": "0x36d38f0237a98da4efbae92e900c6f2cfe8bf97504650c69a3330d9c6915fe8b",
    "signature": "0xe4ad1a61c19dc4ba61d43cd026ff522d18a7a7405fd207b314f1178e715f75810de0958bbacfc73263a47cdb8d37ae09abe3d5a380a32c3190716c1f1595a7dc1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}