{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "291509242",
    "entityType": "Track",
    "nonce": "0xe055d3409e8d3b29c5229beb53cd1fdbfac1273f6237a35b820c48bd4d0569cf",
    "signature": "0x1bd50bed8b14e1d6e63ee8e159d8eecbb7b635b5526126c272601741239908f65c7dbd1bbc1c37e4d4c9d4245b1db99921820f91f13f4d05372f6a65130992e51c",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}