{
  "manageEntity": {
    "action": "Save",
    "entityId": "317282438",
    "entityType": "Track",
    "nonce": "0xf423134b125e53915e4633dbe1fa889ffeddc97bf30e5fe9b4cd75da5ccfbe49",
    "signature": "0x2bd64e8766e9b35217366f3263cbc12c51e9b16dbfa0133721ab805afc7485dc0d9e78698688db59c6f55588a84d26b43153f9710abde497ae76a851c504e5621c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}