{
  "manageEntity": {
    "action": "Save",
    "entityId": "326009444",
    "entityType": "Track",
    "nonce": "0x32699d9179ddb74505fe558f0df08cc7dc8fb6c44c71dc388370caa1b0dfb061",
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    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}