{
  "manageEntity": {
    "action": "Save",
    "entityId": "921826685",
    "entityType": "Track",
    "nonce": "0x92bd09fd245c8c2d74b54def6aaed0b8bf966981694fe2a24d8d9cd68e7739f3",
    "signature": "0x9bd94dfb6653a727a65bfdc6982aedd8b6fc36791f022da19c394aaa702d72050081a334d3fea0316b019c16edcc205fe248fed6ad22b4d001e0f6f31ea04e421c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}