{
  "manageEntity": {
    "action": "Save",
    "entityId": "1269586208",
    "entityType": "Track",
    "nonce": "1794005254154564860",
    "signature": "0x5ff0a64cb2930077ada7197e6f56e9f1df46e2cf4a017c67551eef38cec9dfb76562cc7b39a233d702503ed70316174f25e46e88840a815c4573e0ab8bc0b1031c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}