{
  "manageEntity": {
    "action": "Save",
    "entityId": "1212129071",
    "entityType": "Track",
    "nonce": "0x892d7f0a4fa04c5da33890fb45fb305c91aef5dfb6ec17743d6bf960602e6cc5",
    "signature": "0xa12db627de0af694825653a9f783d59920e08998029cb2383527c8ed0a7f2204365623a7166e4b286bcb41ee2b34693360438aab532fe934a48eed4629b0337a1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}