{
  "manageEntity": {
    "action": "Save",
    "entityId": "406067",
    "entityType": "Track",
    "nonce": "0xbbb377bbbb82fd967f72bf81f42366f1b05afa732d970652513f5df4f50e72e4",
    "signature": "0xca07136ae2fa91d772e18676bc55fbe824f9258c318ccdbc75b0bdf3043e206629519a794c3a164caa947bb871deefaacd70b2b96ee908690dc660ad300fb7811c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}