{
  "manageEntity": {
    "action": "Save",
    "entityId": "716302",
    "entityType": "Track",
    "nonce": "0xdccbff760e3da2cb071a349b36447cc3abf24eecf65260be253b3ee6361e62f2",
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    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}