{
  "manageEntity": {
    "action": "Save",
    "entityId": "357167534",
    "entityType": "Track",
    "nonce": "0xc6512d3a1e2deeb9e9f195517b6d2234c777c90052d2b07ccaac920cc20c950c",
    "signature": "0x1cef38476d4632847bc71ef2ee9593a392d7f7e29d741f886aa8a48b524ebbe36c806264b72a41375396747add5482817b912573e159dd47864ab85419cc45441c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}