{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "288160",
    "entityType": "Track",
    "nonce": "0x74ea78bea1889de22fe427aee59dda66aa69e3e40720fdb07a58339c11c3136f",
    "signature": "0x5b0692cc84d7bf3e539307b6c4ff7f93128756e32385837b2ff3380160f31fc6641948462f5846f2a65ccaba32a4f70eee3661ae48c4fd163499d72d7aad81b71c",
    "signer": "0x77716b11b242ACc386023E99B7e647CaCCcbb8b6",
    "userId": "126786"
  }
}