{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1649786461",
    "entityType": "Track",
    "nonce": "0x4e17e138f7ab98a0db1d0af5ccb04f1a6b6083aa765574167acd49fc4ad70391",
    "signature": "0x82ae065913cfd6a59766970f2d421984410bb1abb1169568c29a1bc2db07b44c2f85735cdbe9a9aa3d78a900fa020bba84cf43dc3b9a68d7e183aa745d1e3c591c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}