{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106755944",
    "entityType": "Track",
    "nonce": "0x10c962bc0deadb50d278900be5a738250b13cad8874208ae9a01885b70764a8d",
    "signature": "0x798c5f09df5d2c6d95049055401472a0b739464ec21f5f2e9418c7f1fd9a97d36d83537ea8ddc830edd8b67ec16914446a0995329cd33710fa58be6b5147fef21c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}