{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "673028578",
    "entityType": "Track",
    "nonce": "0x800f623d46cc0d80241e41fc16ca7093cc7fa4605abc81fecf5379dd422c9ce3",
    "signature": "0x282989e6b3b90ded8567755008a1c7e559c2f88b0e1e854146ced47cd0f335a27718843851237f506c7e1dab6114143c00d674236bf96b1246966aacdf78f8241b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}