{
  "manageEntity": {
    "action": "Save",
    "entityId": "1654394254",
    "entityType": "Track",
    "nonce": "0xe67af9fb00f0b3a266cc1e09f8ee5eb7c979571b0c46192638117ffaecc1588f",
    "signature": "0x6fec122c4b24e7fe25e7d9f3a6d5ad5a1e4bcc0bf78f5efe4c62941b18565da2303e1449a73d59348f3862eaf6ca1fbd8e63fc429c3aa844d59247348963ed511b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}