{
  "manageEntity": {
    "action": "Save",
    "entityId": "337905278",
    "entityType": "Track",
    "nonce": "0x6a1bf3955d0441cf5715e3d501ef101f5a8fb0756ae7716b299e44e060327b5c",
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    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
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}