{
  "manageEntity": {
    "action": "Save",
    "entityId": "317587",
    "entityType": "Track",
    "nonce": "0x35f83fe92efe1feb55caccd1d700e3b181f5e74ae9a4684815d0f00d1da553cb",
    "signature": "0xa01a557727b838ae081fe6c5cb5594dd7b4362f7a1305d0dd76c684c992199df313c4531006a4778ecf00f38d92f1bfc125c8491bb2700104df955108cbb8aed1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}