{
  "manageEntity": {
    "action": "Save",
    "entityId": "262535",
    "entityType": "Track",
    "nonce": "0x107cc8a89775bce8761b092ccc9abdd7433943ea399e9b592ae97a82c58e37c9",
    "signature": "0x8d0d2389cb05b1083fb44261f6d98540e8344b408e2f8b9b00688be165f7595b2d15ab271f54542e6007b9e5f309dfd21a8c53504c9c4bc02f97c1ef495dc00a1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}