{
  "manageEntity": {
    "action": "Save",
    "entityId": "2019636210",
    "entityType": "Track",
    "nonce": "0x7e684706c5a9bae6337a1b1ba9f167b8f4e908de7557ca76a6a40ce874626e1a",
    "signature": "0x95e551ba0adca9fe8e4e38e8416149cbd6750623a97395fb56fb154c6faed0ed27a6575e3e1f0e50cbf68659a79ddbdd4fd76e48708d224f33aea8ea899e32221c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}