{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167966918",
    "entityType": "Track",
    "nonce": "0x7607f4de2406799419dc2980d5708b15dbd94bd972052b00f8c202736f10d2f2",
    "signature": "0x8aad912d5eb4d6fc4c1d31603c603b6ddf2565de487d1cea32146c6162fa4aec40fc73761162373fb7096af8b91c622295bce30150910900527a40c75d38d57a1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}