{
  "manageEntity": {
    "action": "Save",
    "entityId": "1062681",
    "entityType": "Track",
    "nonce": "0xc5554e15a1936507c73a04a082ed3db6c6cd05200f16d105f5403e8456c7fd61",
    "signature": "0x538eb85861f23e02dd8478378fd5c980f6285e7cf14a279b9a36abf6b34fbed41d7ba4ddc6f4a134babdcd7b2f8aac2cacaa2978682c01b32102732072ba12aa1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}