{
  "manageEntity": {
    "action": "Download",
    "entityId": "1550358768",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"city\":\"Warsaw\",\"region\":\"Mazovia\",\"country\":\"Poland\"}}",
    "nonce": "0x273e6f0efbd3463a0abaa992e42191c2123c24b19caca807c86f66c1bb72ec69",
    "signature": "0x4736357f73c73a2f0b290d161249fbc3819c62c96440209ffc22d6f278135e1035fc9ef9456c835f48b9bdbef21acf36660eb49b1d64011f6bc5c6f13ec2cc7c1c",
    "signer": "0xd33Bf2c3dACF187C1f5DE43f7985f84c86003717",
    "userId": "359462979"
  }
}