{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090147626",
    "entityType": "Track",
    "nonce": "0x68f742f718b61c480657b8634da3ef44ca799f09142655ae8d96f64ed3830942",
    "signature": "0x33b82a9f9574f0ea0755c2e4f8bf1043d6894b0aa812167acf55c7f484b59a4e317baa2101a0ad163367f00846699093c4a8fdad590f30c96a02fbefcf9c80eb1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}