{
  "manageEntity": {
    "action": "Save",
    "entityId": "926935977",
    "entityType": "Track",
    "nonce": "0xb1e587b80c8db1d3135d592bc244da068fed26afb05614c9020f65ca202ddfb4",
    "signature": "0xd07c433ee8d09a297d21124155da23db01a10347e3826229e5bfd82947e442fd40dcf22cb3fbee694028ebaa1cb4b9b31755d12e834ef0fa687385372e8611191b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}