{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "830900014",
    "entityType": "Track",
    "nonce": "0x6cc2c198352a2884bf9ce8028ca88360916b5e60ade4185dbae8474a779b91eb",
    "signature": "0xfe3d64b0d852eaf8c493a5d93cae9cf2d552b310b52ac73e24a54728383522da56b55aa009d60292a85c170be2428c65ccdb3923ece4f20a4c09e72fc6b015901c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}