{
  "manageEntity": {
    "action": "Save",
    "entityId": "1455978009",
    "entityType": "Track",
    "nonce": "0x6f58a6dc0f941a31c64baa42c0439c1fe64f23238960aefa2c37a3cf15874a1d",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
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  }
}