{
  "manageEntity": {
    "action": "Save",
    "entityId": "694807868",
    "entityType": "Track",
    "nonce": "0x048bb4c2f50aaa86059b599f9854662a7c85b9bcbef428c1aa9d838e5c73ca7c",
    "signature": "0xf16f6baa7a7655d96fb516066deb4eb149fed83efb00fe9c7f04d863b6b3077b7310e12ca58b6e0b1c3817ed6c1f06574553774a88969ab258ec8186048a613a1c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}