{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052702",
    "entityType": "Track",
    "nonce": "0x2637abbd88516ed062b84133d02b151ad6f03734efd4fb107c177d0cb7784368",
    "signature": "0x263f34a28244b0168cddc037cb9410127cf43e8177e71f14fadf381b87c4d36358705608bb2f9f9ddc562f869c39b79ef710b81a59f56c46f899d7706c20aca61c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}