{
  "manageEntity": {
    "action": "Save",
    "entityId": "1326928844",
    "entityType": "Track",
    "nonce": "0x92a2e5310365be4a3c434394957aaa619976137eb102a8a7c04598d120c0df29",
    "signature": "0x91b2055a1ecad71e5ad8e68719853f6a18ebaf3ee648413434a936dad7a343f255d22e766aa4304d5c8a963ecdf6c69951de60840c0574fe65e1691a0f5d43c81c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}