{
  "manageEntity": {
    "action": "Save",
    "entityId": "128857126",
    "entityType": "Track",
    "nonce": "0x3533a7fdcd04b54029ce0e56d969ff729ca41179511d14ef75a0ab2d7f053407",
    "signature": "0x4986e3da8cb2bfc30d9e8e70301640acec9ecbf045078dbc4332c94602ae70f74fcf21f327c3fdef376b3b0b2abe542d3c73140e52c16abceaf2dfe1521d51a31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}