{
  "manageEntity": {
    "action": "Save",
    "entityId": "315218",
    "entityType": "Track",
    "nonce": "0xdb29c1b1b2758776a50eb606ae5eca9598e64533dabb6de1ff19000551920df1",
    "signature": "0xcfef81cc197aad5bbbd14723be8e1af44f50998298f1d9ff770e695be98eec0c6fad6059a55539323a2afc550713a61821f449ad43b80a71d271a5e297fc8d5a1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}