{
  "manageEntity": {
    "action": "Save",
    "entityId": "997718913",
    "entityType": "Track",
    "nonce": "0xc98256ec0c6291b38afb06e4f47def0ae6ac66e3653b4c92cf8388bea4b5ce1c",
    "signature": "0x12ef2219d292e22ed1c13e6a0489470d852c596c7afaf552b8d1306f4ab067f770f79acd26f43ac35f434a5f70524ece9617f3cf8314645f84047982f9229c281c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}