{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105702412",
    "entityType": "Track",
    "nonce": "0x7cc1d5dda1ea23569d9e774c19b4c9e65a6625976907b4e241ebab77add9034c",
    "signature": "0xbc2b2e0726df98c4fbb445ac2c37bbb1c7f0fb0ebaf4308061fcc09e1f6257ae0d2dc7bae2dbcb38464e8f513622e09f136a5564b0d9de5a723055931e6809ce1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}