{
  "manageEntity": {
    "action": "Save",
    "entityId": "1830824370",
    "entityType": "Track",
    "nonce": "0x1afc43f928ac7d0319d7447188e64ff0cccdfe768778b5528d39205ee58bcf3f",
    "signature": "0xce2c801eaa1a0de49b090ac4da59299a7b887a86807026be886da3cd1d10ed21259a29c562a68e2368f3b65122c4413e6d5aee72f57e5bf1d409ffa529cf87011b",
    "signer": "0x0e08C058dE1787206F03B99840c282498259E9C4",
    "userId": "589495545"
  }
}