{
  "manageEntity": {
    "action": "Save",
    "entityId": "432462",
    "entityType": "Track",
    "nonce": "0x142cfe4ff7c7829fed44a22d994c21e966a886ca773726e3fb3217918a48f01a",
    "signature": "0x65b3a4db35641a08e41b021bc91b3a3e2d09b6175f413b9cdcddecb9eded9e7c0dbc4b6824071d1cf99ec46bf6ab9f06e222507868dcd5661da4149a55d80f9f1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}