{
  "manageEntity": {
    "action": "Save",
    "entityId": "27352801",
    "entityType": "Track",
    "nonce": "0x6dff0c7ba10c679b3e050343f24074f97d26b16deae9e7048f4859e26e32eaea",
    "signature": "0x2783e3edbdd0baa39a572097e426a20da39ff3d38f498e4487f0a46f4e4715e46cf7bd9c018cdb90a326e521fd671341a4d5dabd41fa3e0dd8218cbcb82d7cce1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}