{
  "manageEntity": {
    "action": "Save",
    "entityId": "980168423",
    "entityType": "Track",
    "nonce": "0x6ff653c61f752facb4f80a1f8f9b076500103a0c2575b6e2a5326d14eb5413b9",
    "signature": "0x7b2bc6d4723fb5033ade27a898530ab8114b927bd99fffddbfefda0f05d928dc0ff2e78f0d326828932a5f7c559fa14f44ea0b6341003a754781f7ae3ea590bc1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}