{
  "manageEntity": {
    "action": "Save",
    "entityId": "2058648163",
    "entityType": "Track",
    "nonce": "0x8e54426856e208eeba4b5febdbf293da45f959282b885bf74633a77918d986f1",
    "signature": "0xae7ddd4f04404252dde18a2a6fc3a36dfb8f8c315b87ede347d5f2eea91d5fe0742192f10ef2753fc9a2a64dc6432a45df867e7a35582afc589793cc211dd6ed1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}