{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "949347",
    "entityType": "Track",
    "nonce": "0x044f7224f654f727a3f3271a04d6dc52c7e7cea80b00d545a223c4be699e5336",
    "signature": "0x3021db5debe80027b0efd3b360e2d26071553f2e5868102fab83089ff8f6aed314786006a84357a3334e5c922a3b3f7774046ccab78807255e9abb8225277e821b",
    "signer": "0xD3C337cCbC9472eD02505A73A83f3b23e3934fD0",
    "userId": "358265067"
  }
}