{
  "manageEntity": {
    "action": "Save",
    "entityId": "1981600794",
    "entityType": "Track",
    "nonce": "0xf0f253cabeaa86258d038139fa94621ac63abbbd830f03605a94bfdd0c78c3d1",
    "signature": "0x20db0aecb66ba3fa9de9951851f33fede956f4a08861606679c60e56785ee8b1186529964177055b93255399e46a50773799bff09bfa4717782248dbf2ac5bb21c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}