{
  "manageEntity": {
    "action": "Save",
    "entityId": "2056506848",
    "entityType": "Track",
    "nonce": "1792362226753840552",
    "signature": "0xbce9e397d5b722b1872e6f35915ca5be49569df2c82934102ba14278074bbb2b2b44391e074f3814b8e0f5db815e1bea838c4e1d41c814fbdf5726be4c6878e31c",
    "signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
    "userId": "329513359"
  }
}