{
  "manageEntity": {
    "action": "Save",
    "entityId": "1126409612",
    "entityType": "Track",
    "nonce": "0x89443b5f0a8382ad16ccdc03a1230b211f5b1852741d4b2e9388c258304eeb5e",
    "signature": "0x693b95a7732d53c4a1d2bb7125d3fce127079a874659881873a9b8c2745c484427c63b0de878eea80352157d09e02c68d60f560cdfde49b4b107bfd7e2330cf41c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}