{
  "manageEntity": {
    "action": "Save",
    "entityId": "178551249",
    "entityType": "Track",
    "nonce": "0xdee5166762d572026265238814634b90890716eaab803c669335d4e823b2d568",
    "signature": "0xa6c9662814b9352fbf82079e7e92950da65f6bcfe9ff11b175df2aa1d46fd9f14f489a8976ba042cd8d1dd204e02e16a9be7dbb5fe9c70d90b145c5778c942b81c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}