{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1224730011",
    "entityType": "Track",
    "nonce": "0x514b200ca073a38e00219ba32f5ba02c5e9252dc1755b590b5eadb30c1d726dc",
    "signature": "0xff4dc49663a384bb445eda3b27293121efe8aa68d9dec0844d20dc732007dd7c362a5cfd0666b5f22f9371fa83fe37c7ed9c6c321cb44b0f4c3bb565f13a6f181c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}