{
  "manageEntity": {
    "action": "Save",
    "entityId": "1465397963",
    "entityType": "Track",
    "nonce": "0xe2fcc01252722fb9feb3d8f02fe30fe60f80baa60a3fd4ef744c1199a4720dae",
    "signature": "0x40efa0d275c48c11874eb4c769938cca114ac4147ddff90551705d6248f01d0355b6abe74cacf73614b22c0d997dea67c4725f39fdac95c2b35e6f68951a9aa51c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}