{
  "manageEntity": {
    "action": "Save",
    "entityId": "2078784354",
    "entityType": "Track",
    "nonce": "0x22a8e4074d69432c9641dd4b6a20e4a87df008493e49947ce82334dc8a8383f2",
    "signature": "0xa4a8ff31529eb04617db2f0dc8225f38934e00785a097ac7b84f85085518a79b5d88429496c53be629a84a53c2ea7102c43a56ccbbd417c8a4377e6dd7b064651b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}