{
  "manageEntity": {
    "action": "Save",
    "entityId": "63735",
    "entityType": "Track",
    "nonce": "0xd0428a2c3ec981c2a042ec8b5c9bb544c9f48d2f28c34f53bd95993b0ac12905",
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    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}