{
  "manageEntity": {
    "action": "Save",
    "entityId": "1163140816",
    "entityType": "Track",
    "nonce": "0x0db2f738cc89e4b9f5027ca409d3f0e77f2ff06416135d6441a7a74fc298b40c",
    "signature": "0x0f259ff7d0c3ad180d6c0b2a05791150b1d576bf186c7b4e45908d94aea8cfb83490fe79b75dc203292842adeda66b4bf5743761725af4fae3c7ce0b453074321b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}