{
  "manageEntity": {
    "action": "Save",
    "entityId": "1098189688",
    "entityType": "Track",
    "nonce": "0x124ee73655d651d3cf3d152395fee8a68932e7edff6cdb15e9aef3dce37e04e7",
    "signature": "0xe7e0b943fe6bab6e324f3618318cacd5e28a9dc9c48b4e648a43e349831858e53898049d5a257c7140bf2273e42e56965d5a0e63182cfba5f062e78c34747dd71b",
    "signer": "0xAf1f176E32866fb97d822F6f5222061aF11ef652",
    "userId": "954117045"
  }
}