{
  "manageEntity": {
    "action": "Save",
    "entityId": "166062746",
    "entityType": "Track",
    "nonce": "0x882d99fe331a5ccac0c1a0c87ee1bfaa5683df68146aaedd5f6930f4b1cd80d5",
    "signature": "0x3c73c22c0a6e4ecb18e1d27c1cc0a79d723f478d51bbed0f7331e2f1826bfafa12626fc87eca601b9f419660eb0e138795c22bf46939f1c4b91c970407a40f5c1c",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}