{
  "manageEntity": {
    "action": "Save",
    "entityId": "545534",
    "entityType": "Track",
    "nonce": "0xe422bda6e43b8079e7502b8f8be19f249c74566b542d0c5b1cec39646a160d23",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
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}