{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "203070998",
    "entityType": "Track",
    "nonce": "0xecc4f2d23a5fc6be97f257c4841a6683694cca463e1c522e33b41ec9e00f874a",
    "signature": "0xd6db16ed1dcf7897335844a708d6f68e03d4e8e7e82ad9b411dae2a0596449b369785755c9e15c3b71c26d3daffbbaf61ed13c8157de7ac25b98e16158f0ad5c1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}