{
  "manageEntity": {
    "action": "Save",
    "entityId": "816776552",
    "entityType": "Track",
    "nonce": "0x5093baef608dfce5c150cefa64a9c7206cf844197ec1db333ca6802e07df63b3",
    "signature": "0x0bba3c68ef8c1b1eae5274d4010dcd8e2cf352b4d82b9c964ea22b5fe7a9378d168fcb6ccd48756d853bb18731b3c274b04e5023a9e63446cc89f433cbf041a41c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}