{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116804",
    "entityType": "Track",
    "nonce": "0x10047f18686e45068d553e40b6081e43787cb33ce2327b8b7febcc8b2cacc77f",
    "signature": "0x0972bd1e571d48c954c32579f41ed4c8a73d96569c801c6e7f27808bf14dccb702be884b938a730635e2bc95dfd150a3c673fc80b4ef87ca6046f8b642550e2a1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}