{
  "manageEntity": {
    "action": "Save",
    "entityId": "718672894",
    "entityType": "Track",
    "nonce": "0x7c94e774901155086fd1cccd006352ffab1136246c93d189b15fc11752dfdef0",
    "signature": "0x95e8566baf29bc8aeaa1ed8221da65678faa66e5722f52791ca3658f1ea22b0b64047c339b71fe0f19f8d5c2a1fbc6a51376aac610499b22f68f402e16c601391b",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}