{
  "manageEntity": {
    "action": "Save",
    "entityId": "352279626",
    "entityType": "Track",
    "nonce": "0x3834bd889a277a00cc0e3e959f5407d2d42383e258715041f983e72e9e57befd",
    "signature": "0x166f833a7a3db374e00cd10ab81febefea477734d419f34580a22ebc712482747b7c0647fa3629f2ef00eb3f00de55da7886bf472991413babf724b02aeecb541b",
    "signer": "0x645f1F313A6B28717086d47DCd9f8B9fa0f9CCf4",
    "userId": "809556217"
  }
}