{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114632892",
    "entityType": "Track",
    "nonce": "0x8819b4fb35546546656f0b236db9456466e840c73c30052f281cfcbb20e40f2d",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}