{
  "manageEntity": {
    "action": "Save",
    "entityId": "2090079492",
    "entityType": "Track",
    "nonce": "0x6ee8ab47df08b2ca0904b65a45a1a4f63bb95aa63938f718b737dbe1c6cb3bb6",
    "signature": "0x3797220dfaa1ef02410ca833536d992f5cb24d30d3d9e01ba66dc1e065327b161327165266e018b629a71a6577ee749edb917132335770f71bd387b6b4c66b6c1b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}