{
  "manageEntity": {
    "action": "Save",
    "entityId": "94759",
    "entityType": "Track",
    "nonce": "0x7c4eeb393f8deabc45bebfc988f336bc9e915eb69611c492587d42fc1e21c4c6",
    "signature": "0xb54ef327e1beca8a83a397c6d4c04c2991e0fcfe405f278b694ce7725491c0a0129bf299f6437d969c8e246ece2f9c05ba14f812d94d6c11c318dc3b726cb2c71b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}