{
  "manageEntity": {
    "action": "Save",
    "entityId": "211952",
    "entityType": "Track",
    "nonce": "0x076759474c48fd0398ddd544fc5536b0920f826a0fc70675cb6b13ef596abca7",
    "signature": "0x900571b048985254113fcfa5a47716f43464926657fee5779fcf22975560713400b62953fdaeb89ff8bd91707828427e475ffc4edaa656a08f18c041f24f60471b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}