{
  "manageEntity": {
    "action": "Save",
    "entityId": "2070575840",
    "entityType": "Track",
    "nonce": "0x6f013fc6ed245a9e745ee12b4bd3502d2a3218e7be4aabe57cf85371eb578315",
    "signature": "0xedd2658a20869772c7c5375d2133a30e3707d17ee2dac95206f270fef4c84ef9145d39fcf35efd348327452d17ff389874f4b81966f034139a9ae9315f907cee1c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}