{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1544682122",
    "entityType": "Track",
    "nonce": "0x87efdd1656f747a9e502c05104a45b8f322b001316b11fbb8798ae09a70b2f04",
    "signature": "0xf50568e9c18f9d4f13ab92682478a7a4f1075e6187173bc435a69ad7f0167a1b0742a6973e0ab4e1ec8fd4ce2bcec2b090457528bfc404c6b124b48f17de3d691c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}