{
  "manageEntity": {
    "action": "Save",
    "entityId": "238047166",
    "entityType": "Track",
    "nonce": "0xd361b865f5ad0b25fbfe04e6c88270cb8cdb2c512955e175c626ac93af15d85d",
    "signature": "0xe469a1b92e8d4f85563252be14b28db5567654cc10b9fac9f0e5549e33e2e178339428d6e7b9cd0acd4545051a4cf10d066801213570c3e5acc793824cded8ef1b",
    "signer": "0x41a01020eDb8355b2355e723a34432f0554e0276",
    "userId": "179237719"
  }
}