{
  "manageEntity": {
    "action": "Save",
    "entityId": "1866042672",
    "entityType": "Track",
    "nonce": "0x394a4e44c64d7634111bc8e046aecabe6c35c2e481150d8f750e535acd386c43",
    "signature": "0x75d539fc6410e377c953cc75d211052ba1dee69b942cd1766887885b79dc86336b8aafad619a63a30ae731900997816096a9b51451a3c72627ee93a1a65bebe81b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}