{
  "manageEntity": {
    "action": "Save",
    "entityId": "1336032864",
    "entityType": "Track",
    "nonce": "0x18597d33c059d0df4a7a0335873f947710bf006ef89696b1442da1bdc45f4d64",
    "signature": "0xcc54e32169c5093d6673cf3068f5f7070046135a81244c394ce3a9450503181a09c9bb7c3e0de1a97bb729592aa84b4749d1dfd1b816a11e6be31cec295e32431b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}