{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1091349030",
    "entityType": "Track",
    "nonce": "0x69fb3a0746ea4c6d89372219c33a024dd883aef388b99fa5433699406fc6a89c",
    "signature": "0x3375e33867d5988a4223b77e203cef8057ef284e763a82abcb6ee5fda2dbd6cf16434a5d0bcd0b09446c569d4e14cc8dbf0417f78ac8f8cf49f9c24654324e511c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}