{
  "manageEntity": {
    "action": "Save",
    "entityId": "1016066",
    "entityType": "Track",
    "nonce": "0x8e611c830860ca543cbf60d8741b68c74530a84f0a4995ed766062d39bb7036a",
    "signature": "0x5d765b6e46407e288980baeaca545c430954a235d697dd9068bd4c029d682121573ca6da681c2a385195e0f412dbca2504e70b35f3ec672cce086d480df4a4d01c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}