{
  "manageEntity": {
    "action": "Save",
    "entityId": "1626819672",
    "entityType": "Track",
    "nonce": "1791361752746840886",
    "signature": "0x920e6ce494ae328dd4e2f8e4312bff962c3db445982336a26906b9e95d7fb0ac345539428dd4d8b0efaa29981a01ee8e9c5b4cb7bfa0d89f1ed0def3ee46906a1c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}