{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "336273993",
    "entityType": "Track",
    "nonce": "0x3439c73e4b04121ff141a4afb5a803b008b32ea1a9b80da67c9871ddf9affebd",
    "signature": "0x7ddc76f03530a81a3c11fbb736931c2e04e28b8065559a057c53589284c4e53e2663a3683fbe58d1428867f2f5596dbb95d6e61feec6157a832d0be36be9e9961c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}