{
  "manageEntity": {
    "action": "Save",
    "entityId": "1683437393",
    "entityType": "Track",
    "nonce": "0xe5cd83540a9f77e6e992e6cf82c408c371f170e640afb760d7b252e8aee23faf",
    "signature": "0x13e4398e9bba2b19c9cd80b60d712b2ea5a17b8f254965e543f9365b021a3fd116235c20bf2565f5c88bad41c094f426cbe7cfedd73038486a4a851a879867471b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}