{
  "manageEntity": {
    "action": "Save",
    "entityId": "444835585",
    "entityType": "Track",
    "nonce": "0x5e19a3582c03d1d2975475f7dedd6e810c25cd08dfad7b4da42c1541d2ed02e0",
    "signature": "0xcbbd36d4953458fbd80e43242e8e930b99d1d77c9350785d91a48b3547ce91580c6791730161179cf719131a7f47769750cf225df198dfbca351ddc0974b47091b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}