{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052282",
    "entityType": "Track",
    "nonce": "0x63dad0a644c18539eb108190ef62e36e8833daec97871797858171567832cd4f",
    "signature": "0xe8b7dfd04fdda552a54f7a5e00d5f0a6fafcfed9ec571332226681f6ae7c390e0f9dc2b6083205898d13c2a5f9d117c53f7a35296725207d1449f0157ef01edf1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}