{
  "manageEntity": {
    "action": "Save",
    "entityId": "2022526807",
    "entityType": "Track",
    "nonce": "0x0ed4fe94c4c9f2789fdea177b65e0c0dd4e01529aaf0124a499fc9889df4291e",
    "signature": "0xd021f8a6ca53bde41cbbff0717d7f35343b1a23922dbd7cf92de8c2356bb91155d655d4175928413bb0643c0f7387a262db82ee65f18a96c8ea5fe21776747291b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}