{
  "manageEntity": {
    "action": "Save",
    "entityId": "1758059278",
    "entityType": "Track",
    "nonce": "0x00826c9772be3868fd319afe8ada4355ae9b0d8cba6c92745beaee1578b5aa62",
    "signature": "0x45e80b016920e15f318064d6bd17b7b41b8d4450780f7a204422632869d638c06256e24cfdeb3ab6821e1b4ca02b6ecc42169252d4de4b5fab420de9673ba07a1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}