{
  "manageEntity": {
    "action": "Save",
    "entityId": "1001187396",
    "entityType": "Track",
    "nonce": "0xdc934884fe3569a74bebe24b347441031b21ade3d5cd6044fb1005f021c25dd0",
    "signature": "0x4a6d68c0ef79c8b977e8f7e845cf657db1d8e96592cde475c02f87a2604061817167387f26e4ef4fc02cb2f535bf6335737fc4b28fc9321a7d10fa35f852449d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}