{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "805393455",
    "entityType": "Track",
    "nonce": "0x706affbaf9192cd22a546a5352a8a2e11d9f99731ebe04966ad932e00e365c4b",
    "signature": "0x051aed91cc3c8bb48259929f302a207106795feea65b675c66c08e64ba8754e57d04aae62fb4519206a90ca5756b183439834e8fe267e28e256b94dbe00d51501b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}