{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008778618",
    "entityType": "Track",
    "nonce": "0xf3182dfd506d44dd59ed37e895a27dae226c802b3f58d40c9a6cd5b1c39812de",
    "signature": "0xce06704a59f98f33b00a4b1b01455e691be759011bdc322edf3381a90a4e5b4e77fa51460ceb0f234b826a1abc17b4be4e459d789a38c43f75dd7a6d5993d5431c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}