{
  "manageEntity": {
    "action": "Save",
    "entityId": "426255",
    "entityType": "Track",
    "nonce": "0xec3dfbee376b040e70ba5e4c2a4dfa48b04734de24ed360b2f4c6f6729a9ce9f",
    "signature": "0x60f9b7948b9232147250c40db12346c3bfa0f7ce4b39759d76de39836083b9f22ca267b61e98013bdcb7dfab0122bf64b21927b5f003a03a6ba723568acc00291b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}