{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026279",
    "entityType": "Track",
    "nonce": "0x9e35441b4c970e35b94541fe8f67e39914c74a720d9235e5f0ee4ba95d35ba84",
    "signature": "0x8b0db30011a529efc0100e0245d11d5aade04612af79853f8b458b23d026c2d527162999bbf2fd7c510b0e4c0da1306f63eafecffdb658b1d23c31e623077eb91b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}