{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1959242982",
    "entityType": "Track",
    "nonce": "0x2722ac6febaa2fbf5f0fb25292440fee0579a0b30f4a5de2917da65f7aebee9a",
    "signature": "0x71dd120c9879d5e92f6c5100d8678d5df81e889c6b840642c3a3ca6a726e5bd06a2ce9b07b0aefd1418f8899dc2983f97918035dfd1f3a76a00638628ab07dd41c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}