{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "312451183",
    "entityType": "Track",
    "nonce": "0x884f350143423f49e5bf21ad9d93fa2fb6ab7ff0ec6ec18dffcfaaa6812cef10",
    "signature": "0x718bf6043f553bebb55734bcf5e7593b7945c163fc0f8ccd8fd88782f8db2f5a4847b4213c64cbd404410ecdd28844f82a7324ff8317363ebeb560b1661823671c",
    "signer": "0x8E12224e4dDc1BdfeC3d5Bf01DB7e4Ec17403ABa",
    "userId": "627040654"
  }
}