{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1897466029",
    "entityType": "Track",
    "nonce": "0xb2ed3817ca1bea806c1e5bdfa4151a1ea8a514f1e709edcbf2af17b526fe0d3c",
    "signature": "0xa8ef8025f2d452a0aeaf294cd587a810fd8bf60ef57303207fbf7cb217f5d1b60aef257729f5cb140a76bd9551479c5c91b30008dcff9d6128eb51768ea0e1af1c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}