{
  "manageEntity": {
    "action": "Save",
    "entityId": "1020597522",
    "entityType": "Track",
    "nonce": "0xd5c0e739a3b046c5c03806c90aa23c0c73a6d00be9afe6e12e04d23a6222d366",
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    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}