{
  "manageEntity": {
    "action": "Save",
    "entityId": "1702008278",
    "entityType": "Track",
    "nonce": "0x44b5d5ee69787ca6798dc1831ce4cb4e4ab60a63a7869c81bf7678bd05353426",
    "signature": "0xc11fab815c57edec656db76bc2550753985ba03c89cca522e43e91550ef39cc57d3271f0e2a55c5e80068afed2a1344da6a59e173d2a357a8af8aa3745ab30df1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}