{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059610",
    "entityType": "Track",
    "nonce": "0x2b0fc3e311584cb7d504bbe2022cc453df2b0e4bef194cf449fd41e480567dd4",
    "signature": "0x383167585e35257560161b07f631f1e03ce105458aed1b7aeafdb9102c85be55032d4b6e84794783cadd2eee95ea83d51f0645f6c73aee89e3fd667cf4ccc66f1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}