{
  "manageEntity": {
    "action": "Save",
    "entityId": "24547072",
    "entityType": "Track",
    "nonce": "0xc2a5c8564a59ac1f8b630945ab84bddd39b929dcf60f78b3dca81852c50a8991",
    "signature": "0xb77905a2ab69a392f6291b3b3df5ae00d127c2a976b7a41ca82b62d5e1f1d1fb10be20cb7c3221b6f09d3d9464ac834a13e920654ea61929e4fa7a275d6df2291c",
    "signer": "0x1bD10feaADcF287a6aBF276aeAbEf97b950BE4B4",
    "userId": "584066937"
  }
}