{
  "manageEntity": {
    "action": "Save",
    "entityId": "411162431",
    "entityType": "Track",
    "nonce": "0x35c0156bfbfed44ade791adf58c72d5269308e6115b93a28c5a751f88ad14ace",
    "signature": "0x9c9a62581bc4ed6298ab5bdc07f857ef9057d7e0b0668b8aca84c29a4a87fac3645fb0a7290160819ed2cf0be71d373c644fdc58a482847af246ffe7f9ba1c2d1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}